I imagine this is for indoor work as screens are so hard to see outdoors. A custom cowling, like a viewer you hold when viewing slides on a light box would be great with this outdoors. Like a hood that attaches magnetically.
Yes, this monitor is just 450nits, but there is a sun hood that comes with it. Also there is a newer version of it and it is 1000nits if I remember correctly, which should be much better for outdoors.